FKIE_CVE-2026-45847

Vulnerability from fkie_nvd - Published: 2026-05-27 14:16 - Updated: 2026-06-17 10:52
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: net: remove WARN_ON_ONCE when accessing forward path array Although unlikely, recent support for IPIP tunnels increases chances of reaching this WARN_ON_ONCE if userspace manages to build a sufficiently long forward path. Remove it.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/008e7a7c293b30bc43e4368dac6ea3808b75a572
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/50422613185d505201167e8bdd2f2700790d5db6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/548244c2f542aa0ad49453e9306e715a3877bc44
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/959ea349c7e2d4edf07b6838ca7e59345fe61a08
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a78d055ba7c31103ad02f8eceb0c452e154d2660
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dcf9b3c90e5560339649d088836529883fb509f3
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "548244c2f542aa0ad49453e9306e715a3877bc44",
              "status": "affected",
              "version": "ddb94eafab8b597b05904c8277194ea2d6357fa9",
              "versionType": "git"
            },
            {
              "lessThan": "dcf9b3c90e5560339649d088836529883fb509f3",
              "status": "affected",
              "version": "ddb94eafab8b597b05904c8277194ea2d6357fa9",
              "versionType": "git"
            },
            {
              "lessThan": "9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6",
              "status": "affected",
              "version": "ddb94eafab8b597b05904c8277194ea2d6357fa9",
              "versionType": "git"
            },
            {
              "lessThan": "959ea349c7e2d4edf07b6838ca7e59345fe61a08",
              "status": "affected",
              "version": "ddb94eafab8b597b05904c8277194ea2d6357fa9",
              "versionType": "git"
            },
            {
              "lessThan": "50422613185d505201167e8bdd2f2700790d5db6",
              "status": "affected",
              "version": "ddb94eafab8b597b05904c8277194ea2d6357fa9",
              "versionType": "git"
            },
            {
              "lessThan": "a78d055ba7c31103ad02f8eceb0c452e154d2660",
              "status": "affected",
              "version": "ddb94eafab8b597b05904c8277194ea2d6357fa9",
              "versionType": "git"
            },
            {
              "lessThan": "008e7a7c293b30bc43e4368dac6ea3808b75a572",
              "status": "affected",
              "version": "ddb94eafab8b597b05904c8277194ea2d6357fa9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.202",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.165",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: remove WARN_ON_ONCE when accessing forward path array\n\nAlthough unlikely, recent support for IPIP tunnels increases chances of\nreaching this WARN_ON_ONCE if userspace manages to build a sufficiently\nlong forward path.\n\nRemove it."
    }
  ],
  "id": "CVE-2026-45847",
  "lastModified": "2026-06-17T10:52:36.050",
  "metrics": {},
  "published": "2026-05-27T14:16:56.577",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/008e7a7c293b30bc43e4368dac6ea3808b75a572"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/50422613185d505201167e8bdd2f2700790d5db6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/548244c2f542aa0ad49453e9306e715a3877bc44"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/959ea349c7e2d4edf07b6838ca7e59345fe61a08"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a78d055ba7c31103ad02f8eceb0c452e154d2660"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dcf9b3c90e5560339649d088836529883fb509f3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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